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On the car door. Hold the door ball of the hall door through the door knife, so that the hall door can be opened together when the car door is opened.
No, it's dangerous.
Elevator rescue is a very professional thing. If you don't have the qualifications, if you hurt someone in the process of saving people, you will die. It's very safe for people to stay in the car. >>>More
Golden Horse Shou Spring Maxim's are all pretty good, you can go to the store to have a look.
I don't know where you are? If in Beijing, my family's security door installer earns at least 200,000 yuan a year, do you think there is a future?
There are no sliding security doors yet. Sliding doors have several disadvantages: poor sealing, poor anti-theft (the structure is not conducive to anti-theft).